A screening device for concrete raw materials

Abstract

This utility model discloses a screening device for concrete raw materials, including a box, an outer frame, a transmission rod, and a telescopic rod. An arc-shaped block is fixedly connected to the outer side wall of the outer frame, and two horizontal bars are fixedly connected between the inner side walls of the outer frame. The horizontal bars pass through the inner frame and are slidably connected to it. A lever is fixedly connected to the bottom of the inner frame. One end of the transmission rod passes through the side wall of the box and is fixedly connected to a first rotating rod. A second rotating rod is fixedly connected to the top of the telescopic rod, and an abutment block is fixedly connected to the center of the top of the second rotating rod, which contacts the bottom surface of the inner frame. This utility model sets the transmission rod to drive the first rotating rod to rotate, and the telescopic rod and the second rotating rod to rotate via a bevel gear set, which respectively push the outer frame vertically and the inner frame horizontally, thereby generating swaying in different directions, reducing clogging, and improving screening efficiency.

Description

Technical Field

[0001] This utility model relates to the field of concrete screening technology, specifically to a screening device for concrete raw materials. Background Technology

[0002] In the concrete production process, the screening of raw materials is a crucial step, which directly affects the quality, performance, and subsequent construction results of the concrete. Traditional concrete raw material screening devices, such as fixed screens and simple vibrating screens, can meet basic screening requirements to a certain extent, but they have some shortcomings in practical applications.

[0003] Traditional concrete raw material screening devices mostly employ fixed screens or unidirectional vibrating screens, which vibrate in a single direction, making it difficult to effectively disperse materials and promote particle stratification during the screening process. This results in easy screen clogging and low screening efficiency. Therefore, a new technical solution is proposed to address this issue. Utility Model Content

[0004] The purpose of this invention is to provide a screening device for concrete raw materials, which solves the problem mentioned in the background art that traditional concrete raw material screening devices mostly adopt fixed screens or unidirectional vibrating screens, resulting in low screening efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screening device for concrete raw materials, comprising a box, an outer frame, a transmission rod, and a telescopic rod. An arc-shaped block is fixedly connected to the outer side wall of the outer frame, and two horizontal bars are fixedly connected between the inner side walls of the outer frame. The horizontal bars penetrate the inner frame and are slidably connected to the inner frame. A lever is fixedly connected to the bottom of the inner frame. One end of the transmission rod penetrates the side wall of the box and is fixedly connected to a first rotating rod. A second rotating rod is fixedly connected to the top of the telescopic rod, and an abutment block is fixedly connected to the center of the top of the second rotating rod. The abutment block contacts the bottom surface of the inner frame.

[0006] In this technical solution, the transmission rod drives the first rotating rod to rotate, and the bevel gear set drives the telescopic rod and the second rotating rod to rotate, which respectively push the outer frame vertically and the inner frame horizontally, thereby generating swaying in different directions, reducing clogging, and improving screening efficiency compared to unidirectional vibration.

[0007] Preferably, a first bevel gear fixedly sleeved on the surface of the transmission rod is meshed with a second bevel gear fixedly connected to the bottom of the sleeve, a telescopic rod is slidably connected to the inner side of the sleeve, and a return spring is fixedly connected between the telescopic rod and the inner side wall of the sleeve.

[0008] Preferably, vertical frames are fixedly connected to the top four corners of the box body, and vertical rods are fixedly connected between the inner top of the vertical frames and the top of the box body. The four corners of the outer frame are respectively penetrated by four vertical rods and slidably connected to the vertical rods.

[0009] Preferably, the transmission rod is rotatably connected between the inner side walls of the housing, and a servo motor is fixedly connected to the outer side wall of the housing corresponding to the horizontal height of the transmission rod. The tail end of the transmission shaft of the servo motor is fixedly connected to the end of the transmission rod away from the first rotating rod.

[0010] Preferably, a collection trough is slidably connected to the inner bottom of the box, a guide frame is fixedly connected to the bottom of the inner frame, and a screen is fixedly connected to the inner sidewall of the inner frame.

[0011] Preferably, a support plate is fixedly connected to the inner wall of the box on one side of the sleeve, and the sleeve passes through the surface of the support plate and is rotatably connected to the support plate through a bearing seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a transmission rod to drive the first rotating rod to rotate, and a bevel gear set to drive the telescopic rod and the second rotating rod to rotate, which respectively push the outer frame vertically and the inner frame horizontally, thereby generating swaying in different directions, reducing clogging, and improving screening efficiency compared to unidirectional vibration.

[0014] 2. By setting a sleeve below the telescopic tube, and under the push of the return spring, the second rotating rod above can move up and down with the inner frame, thereby ensuring that its rotation can contact the toggle block and push the inner frame to generate lateral vibration, thus enhancing the operational stability of the device. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is an overall view of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram showing the positional relationship between the transmission rod and the sleeve of this utility model;

[0019] Figure 4 This is a diagram showing the positional relationship between the sleeve and the telescopic rod of this utility model.

[0020] In the diagram: 1. Box body; 101. Vertical frame; 102. Collection trough; 2. Vertical rod; 3. Outer frame; 301. Arc-shaped block; 4. Horizontal bar; 5. Inner frame; 501. Screen; 502. Push block; 503. Guide frame; 6. Servo motor; 7. Transmission rod; 701. First bevel gear; 8. First rotating rod; 9. Sleeve; 901. Second bevel gear; 10. Support plate; 11. Telescopic rod; 111. Return spring; 12. Second rotating rod; 13. Abutment block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description will further elaborate on them in conjunction with specific embodiments.

[0022] A screening device for concrete raw materials, see [link / reference] Figures 1 to 4 The device includes a housing 1, an outer frame 3, a transmission rod 7, and a telescopic rod 11. Vertical frames 101 are fixedly connected to the four corners of the top of the housing 1. Vertical rods 2 are fixedly connected between the inner top of the vertical frames 101 and the top of the housing 1. The four corners of the outer frame 3 are pierced by four vertical rods 2 and slidably connected to the vertical rods 2. Two horizontal rods 4 are fixedly connected between the inner side walls of the outer frame 3. The horizontal rods 4 pierce through the inner frame 5 and slidably connected to the inner frame 5. The outer frame 3 can move vertically along the vertical rods 2, while the inner frame 5 moves laterally along the horizontal rods 4 inside the outer frame 3, thereby generating vibrations in different directions. Furthermore, springs for vibration are sleeved on the surfaces of the horizontal rods 4 and the vertical rods 2, so that the outer frame 3 and the inner frame 5 can vibrate under the action of the springs.

[0023] Specifically, such as Figure 3 As shown, one end of the transmission rod 7 passes through the side wall of the box 1 and is fixedly connected to the first rotating rod 8. The top of the telescopic rod 11 is fixedly connected to the second rotating rod 12. The abutment block 13 contacts the bottom surface of the inner frame 5. The outer wall of the outer frame 3 is fixedly connected to the arc-shaped block 301. When the transmission rod 7 rotates, it will drive the first rotating rod 8 to rotate. During the rotation, the first rotating rod 8 will push the arc-shaped block 301 on the outer wall of the upper outer frame 3, thereby causing the outer frame 3 to move upward, thus producing vertical swaying. The bottom of the inner frame 5 is fixedly connected to the lever 502. When the second rotating rod 12 rotates, it will push the lever 502 at the bottom of the inner frame 5, thereby causing the inner frame 5 to move laterally along the direction of the crossbar 4, thus producing lateral swaying. The lateral and vertical movements cooperate with each other to improve the screening efficiency.

[0024] Furthermore, such as Figure 3As shown, a first bevel gear 701 fixedly sleeved on the surface of the transmission rod 7 meshes with a second bevel gear 901 fixedly connected to the bottom of the sleeve 9. Driven by the servo motor 6, the transmission rod 7 rotates, causing the first bevel gear 701 on its surface to drive the second bevel gear 901 and the sleeve 9 to rotate. The rotation of the sleeve 9 then drives the telescopic rod 11 and the second rotating rod 12 to rotate together, thereby pushing the inner frame 5. A support plate 10 is fixedly connected to the inner wall of the housing 1 on one side of the sleeve 9. The sleeve 9 penetrates the surface of the support plate 10 and is rotatably connected to the support plate 10 through a bearing seat. The outer surface of the sleeve 9 is fixedly connected to the inner ring of the bearing seat, and the outer ring of the bearing seat is fixedly connected to the inner wall of the support plate 10, thus ensuring that the sleeve 9 rotates normally without falling off. A telescopic rod 11 is slidably connected to the inner side of the sleeve 9. A return spring 111 is fixedly connected between the telescopic rod 11 and the inner wall of the sleeve 9. The return spring 111 is always in a compressed state, so it will push the telescopic rod 11 upward, so that the upper second rotating rod 12 is close to the bottom of the inner frame 5. During the up and down movement of the inner frame 5, it can be guaranteed to contact the lever 502 when rotating. A stop block 13 is fixedly connected to the center of the top of the second rotating rod 12. The surface of the stop block 13 is very smooth, can be made of stainless steel, and is hemispherical. Its main function is to prevent the second rotating rod 12 from directly contacting the bottom of the inner frame 5 and thus preventing it from rotating. The stop block 13 contacts the bottom of the inner frame 5, and its contact area with the inner frame 5 is small, so it does not affect normal rotation.

[0025] It should be noted that during the up-and-down movement of the outer frame 3, the abutment block 13 may detach from the bottom of the inner frame 5. However, this will not affect the normal screening. Under the push of the reset spring 111, the abutment block 13 will re-contact the inner frame 5 after the device is running smoothly, thus ensuring that the second rotating block can normally push the pusher block 502.

[0026] It is worth noting that, such as Figure 2 and Figure 3 As shown, the transmission rod 7 is rotatably connected between the inner side walls of the housing 1. The outer side wall of the housing 1 corresponding to the horizontal height of the transmission rod 7 is fixedly connected to the servo motor 6. The tail end of the transmission shaft of the servo motor 6 is fixedly connected to the end of the transmission rod 7 away from the first rotating rod 8. After the servo motor 6 is started, it will drive the transmission rod 7 to rotate, thereby producing a shaking.

[0027] It is worth noting that, such as Figure 1 As shown, a collection trough 102 is slidably connected to the bottom of the inner box 1, a guide frame 503 is fixedly connected to the bottom of the inner frame 5, and a screen 501 is fixedly connected to the inner side wall of the inner frame 5. The screened concrete raw materials will enter the collection trough 102 below along the guide frame 503. The collection trough 102 can be pulled out for unified processing.

[0028] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0029] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A screening device for concrete raw materials, comprising a housing (1), an outer frame (3), a transmission rod (7), and a telescopic rod (11), characterized in that: An arc-shaped block (301) is fixedly connected to the outer side wall of the outer frame (3). Two horizontal bars (4) are fixedly connected between the inner side walls of the outer frame (3). The horizontal bars (4) pass through the inner frame (5) and are slidably connected to the inner frame (5). A lever (502) is fixedly connected to the bottom of the inner frame (5). One end of the transmission rod (7) passes through the side wall of the box (1) and is fixedly connected to the first rotating rod (8). A second rotating rod (12) is fixedly connected to the top of the telescopic rod (11). An abutment block (13) is fixedly connected to the center of the top of the second rotating rod (12). The abutment block (13) contacts the bottom surface of the inner frame (5).

2. The screening device for concrete raw materials according to claim 1, characterized in that: The first bevel gear (701) fixedly sleeved on the surface of the transmission rod (7) meshes with the second bevel gear (901) fixedly connected to the bottom of the sleeve (9). A telescopic rod (11) is slidably connected to the inner side of the sleeve (9), and a return spring (111) is fixedly connected between the telescopic rod (11) and the inner wall of the sleeve (9).

3. The screening device for concrete raw materials according to claim 1, characterized in that: Vertical frames (101) are fixedly connected to the top four corners of the box (1). Vertical rods (2) are fixedly connected between the inner top of the vertical frame (101) and the top of the box (1). The four corners of the outer frame (3) are respectively penetrated by four vertical rods (2) and slidably connected to the vertical rods (2).

4. The screening device for concrete raw materials according to claim 1, characterized in that: The transmission rod (7) is rotatably connected between the inner side walls of the housing (1). A servo motor (6) is fixedly connected to the outer side wall of the housing (1) corresponding to the horizontal height of the transmission rod (7). The tail end of the transmission shaft of the servo motor (6) is fixedly connected to the end of the transmission rod (7) away from the first rotating rod (8).

5. A screening device for concrete raw materials according to claim 1, characterized in that: The bottom of the box (1) is slidably connected to a collection trough (102), the bottom of the inner frame (5) is fixedly connected to a guide frame (503), and the inner sidewall of the inner frame (5) is fixedly connected to a screen (501).

6. A screening device for concrete raw materials according to claim 2, characterized in that: A support plate (10) is fixedly connected to the inner wall of the box (1) on one side of the sleeve (9). The sleeve (9) penetrates the surface of the support plate (10) and is rotatably connected to the support plate (10) through a bearing seat.

Images